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ZnS Optical Components | Infrared Windows, Lenses & Custom Fabrication






ZnS Optical Components | IR Windows, Lenses & Custom ZnS Optics Manufacturer
Zinc Sulfide (ZnS) is a classic infrared optical material with outstanding transmittance across mid-wave and long-wave infrared spectra. It features stable physical properties, moderate hardness, good machinability and low thermal distortion. Our factory supplies high-purity ZnS optical blanks, windows, lenses and machined components, supporting single-side / double-side anti-reflection coating and full customization per drawings. Widely deployed in thermal imaging, infrared detection, defense EO/IR systems, industrial monitoring and scientific optical instruments.
Core Advantages
- Broad IR transmission range: covers 3 μm ~ 14 μm, ideal for mainstream infrared working bands
- Good mechanical strength and scratch resistance, suitable for field and harsh working environments
- Easy precision machining, capable of complex shape processing and tight dimensional tolerance
- Low absorption rate and stable optical performance under normal temperature
- Compatible with various infrared anti-reflection coatings to maximize light transmittance
- Strict raw material screening and full inspection, consistent batch quality
Available Products
- ZnS Optical Windows: Round, square, rectangular flat windows; customized aperture & edge treatment
- ZnS Lenses: Plano-convex, double-convex, meniscus and custom infrared lenses
- ZnS Optical Blanks: Unprocessed raw material blocks for secondary machining
- Custom Machined ZnS Parts: Special profiles, grooving, drilling and shaped optical components
Key Technical Specifications
| Item | Parameter |
|---|---|
| Chemical Name | Zinc Sulfide (ZnS) |
| Transmission Range | 3 μm – 14 μm |
| Refractive Index (10 μm) | 2.25 |
| Density | 4.09 g/cm³ |
| Mohs Hardness | 3.0 |
| Coating Option | IR Anti-Reflection Coating (single side / double side) |
| Standard Dimensional Tolerance | ±0.02 mm |
| Surface Quality | Standard optical grade |
| Working Temperature | -40℃ ~ 80℃ (normal environment) |
Main Applications
- Defense & EO/IR Systems
- Thermal Imaging Cameras & Infrared Detection Equipment
- Industrial Temperature Monitoring & Non-contact Measurement
- Aerospace Infrared Optics
- Laboratory Infrared Spectroscopy Instruments
Custom Service
- Custom size, thickness, shape and radius according to CAD drawings / samples
- Professional edge grinding, chamfering and surface finishing
- Custom infrared coating solutions for different spectral requirements
- Small batch trial order and mass production are both acceptable
Call to Action
Product Page Dedicated FAQ
Q1: What is ZnS used for in optics?
Q2: What is the difference between ZnS and ZnSe?
Q3: Can you apply anti-reflection coating on ZnS components?
Q4: What is your minimum order quantity for custom ZnS optics?
Q5: Is ZnS suitable for outdoor long-term use?
Need Custom Optical Glass Solution?
Send us your drawing, dimension & coating requirements for fast quotation within 24 hours.
Get Free RFQCustom Precision Optical & Glass Components Manufacturer – Felix Glass Co., Limited.
We supply Industrial Glass, Sapphire Optics, Optical Lenses/Prisms/Filters, Infrared IR Optics, Functional & Display Glass, N-BK7/H-K9L Optical Glass, supporting OEM mass production and laboratory custom prototypes. Flexible MOQ & free sample service available. Fill in the form to download full datasheets and get factory wholesale price within 24 hours.
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- What is the minimum order quantity for custom precision optical glass components?
FELIX OPTICAL GLASS offers highly flexible MOQs to support customer projects, including prototype testing, small-batch trial orders, and high-volume production. All products can be fully customized to your drawings, tolerances, and application standards. Please send us your specifications, and we will reply within 1-5 hours and provide an accurate quotation after careful evaluation within 1-2 days.
- Can I get free glass samples for testing before bulk order?
Yes, our FELIX GLASS factory supports sample testing for a wide range of precision optical glass components and assemblies. The lead time for sample production is 3 to 7 working days. Please contact us today to arrange samples and obtain a customized solution that meets your needs.
- What is the production lead time for custom optical glass components?
A: The production cycle for standard samples is 3-10 working days, while mass production requires 15-35 working days, depending on the complexity of the product and the order quantity. We provide reliable precision optical glass components and fast delivery services for orders from industries such as defense, industrial equipment, medical devices, shipbuilding, robotics, automotive, and aerospace. Please submit your project details so we can provide you with an accurate delivery schedule.
- Are your optical glass products ISO, CE and RoHS certified?
All precision optical glass components from FELIX OPTICAL GLASS comply with ISO quality system standards as well as CE and RoHS requirements. We provide comprehensive test reports, spectral graphs, material certificates, and inspection documents for customer review. Please feel free to request complete certification details and a formal quotation at any time.
- Do you offer one-stop custom optical glass processing services?
Yes. We offer a full range of precision optical glass component processing services, including CNC machining, precision grinding, optical polishing, chemical/physical tempering, vacuum coating (AR anti-reflective coating, AF anti-fingerprint coating, AG anti-glare coating, IR infrared coating), and screen printing. From raw materials to finished products, every step is completed in our own factory. Please tell us your needs, and we will provide you with the most cost-effective solution.
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With 19 years of experience as a precision optical glass expert, we provide comprehensive and satisfactory customized solutions.
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